{"id":279,"date":"2020-02-09T20:24:38","date_gmt":"2020-02-09T20:24:38","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/lilijia\/?p=279"},"modified":"2020-02-09T20:25:45","modified_gmt":"2020-02-09T20:25:45","slug":"aops_number_theory-2-primes-and-composites","status":"publish","type":"post","link":"https:\/\/blog.newtonchineseschool.org\/lilijia\/2020\/02\/09\/aops_number_theory-2-primes-and-composites\/","title":{"rendered":"AoPS_Number_Theory 2:  Primes and Composites"},"content":{"rendered":"\n<p><strong>AoPS_Number_Theory 2020\nSpring Week 2: &nbsp;Primes and Composites<\/strong><\/p>\n\n\n\n<p>Welcome new friend Quinn! It\u2019s great fun to try our first\nonline class today. The kids did a great job participating in the class activities!<\/p>\n\n\n\n<p><strong>Lesson Review:<\/strong><\/p>\n\n\n\n<ul><li>Prime number &amp;  composite number<\/li><li>0,1 (special numbers)<\/li><li>Methods to identify prime numbers:<ul><li>Sieve of  Eratosthenes<\/li><li>Test prime factors from 2 to root square of q <\/li><\/ul><\/li><li>Perfect number (a positive integer that is equal to the sum of its proper divisors): 6, 28, 496, 8128&#8230;<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" src=\"http:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/ieve-of-Eratosthenes.png\" alt=\"\" class=\"wp-image-280\" width=\"299\" height=\"294\" srcset=\"https:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/ieve-of-Eratosthenes.png 549w, https:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/ieve-of-Eratosthenes-300x296.png 300w\" sizes=\"(max-width: 299px) 100vw, 299px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" src=\"http:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/perfect-numbers.jpg\" alt=\"\" class=\"wp-image-281\" width=\"303\" height=\"157\" srcset=\"https:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/perfect-numbers.jpg 960w, https:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/perfect-numbers-300x156.jpg 300w, https:\/\/blog.newtonchineseschool.org\/lilijia\/files\/2020\/02\/perfect-numbers-768x399.jpg 768w\" sizes=\"(max-width: 303px) 100vw, 303px\" \/><\/figure><\/div>\n\n\n\n<p><strong>Homework: <\/strong><\/p>\n\n\n\n<ul><li>Page 31: Ex 2.3.2<\/li><li>Page 35: Ex 2.4.1, 2.4.2<\/li><li>Page 37: Ex 2.7, 2.9 (a) (c) (e), 2.10. 2.11<\/li><li>Page 38:\nEx 2.14, 2.15<\/li><\/ul>\n\n\n\n<p><strong>Other Resources:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Prime and Composite Numbers\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/TXDyU5f5WR8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.mathsisfun.com\/numbers\/prime-number-activity.html\">https:\/\/www.mathsisfun.com\/numbers\/prime-number-activity.html<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.britannica.com\/science\/perfect-number\">https:\/\/www.britannica.com\/science\/perfect-number<\/a><\/p>\n\n\n\n<p>No school for the following 2 weeks. No school for the following 2 weeks. Hope the Coronavirus gets controlled soon. Best wishes to our motherland China!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>AoPS_Number_Theory 2020 Spring Week 2: &nbsp;Primes and Composites Welcome new friend Quinn! It\u2019s great fun to try our first online class today. The kids did a great job participating in the class activities! Lesson Review: Prime number &amp; composite number 0,1 (special numbers) Methods to identify prime numbers: Sieve of Eratosthenes Test prime factors from [&hellip;]<\/p>\n","protected":false},"author":157,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/posts\/279"}],"collection":[{"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/users\/157"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/comments?post=279"}],"version-history":[{"count":2,"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/posts\/279\/revisions"}],"predecessor-version":[{"id":283,"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/posts\/279\/revisions\/283"}],"wp:attachment":[{"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/media?parent=279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/categories?post=279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.newtonchineseschool.org\/lilijia\/wp-json\/wp\/v2\/tags?post=279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}